Solar junction box with optimized ventilation structure

Abstract

The utility model discloses a solar junction box with an optimized ventilation structure, which comprises a female junction box and a male junction box used for being matched and connected with the female junction box, and is characterized in that the female junction box comprises a mounting base, the upper surface of the mounting base protrudes upwards to form a lifting part, a plurality of ventilation and heat dissipation openings are formed in the circumferential direction of the lifting part, the first insertion part is arranged on the lifting part, and a row of terminal insertion holes parallel to the lifting part are formed in the insertion surface of the first insertion part; the male junction box includes: a housing; and the second plugging part is arranged on the shell, and the plugging surface of the second plugging part is provided with a row of terminal pins matched with the terminal jacks. According to the utility model, through optimizing the ventilation structure, the path and the area of air circulation are increased, so that heat in the junction box can be dissipated more quickly.

Description

Technical Field

[0001] The utility model relates to the technical field of junction boxes, in particular to a solar junction box with an optimized ventilation structure. Background Art

[0002] Solar technology, driven by its clean and renewable nature, has experienced rapid growth and become a key solution to the energy crisis. As the core of solar technology, the quality and efficiency of the electrical connections in solar modules are directly linked to the performance and stability of the entire solar system. Consequently, the requirements for the electrical connections in solar modules are becoming increasingly stringent. As a key component in achieving this critical connection, solar junction boxes are becoming increasingly widespread.

[0003] When a solar junction box is in operation, it generates a certain amount of heat due to the conduction of current and the presence of resistance. However, existing solar junction boxes often use a relatively closed structure, which makes it difficult for the generated heat to dissipate quickly, causing it to accumulate inside the box. Due to the poor heat dissipation, a high temperature environment easily forms inside the solar junction box. This heat accumulation not only affects the performance and stability of the junction box itself, but can also damage the connected solar modules, shortening their service life. Utility Model Content

[0004] In order to overcome the problems of slow heat dissipation, easy heat accumulation inside and poor heat dissipation effect of solar junction boxes in the prior art, the utility model provides a solar junction box with an optimized ventilation structure.

[0005] The technical solution of this utility model is as follows:

[0006] A solar junction box with an optimized ventilation structure includes a female junction box and a male junction box for matching and connecting with the female junction box, wherein the female junction box includes:

[0007] The mounting base has an upper surface that protrudes upward to form a raised portion, and the raised portion is provided with a plurality of ventilation and heat dissipation openings around the portion:

[0008] A first plug-in portion is provided on the raised portion, wherein a plug-in surface of the first plug-in portion is provided with a row of terminal jacks parallel to the raised portion;

[0009] The male junction box includes:

[0010] case;

[0011] The second plug-in portion is arranged on the housing, and a plug-in surface of the second plug-in portion is provided with a row of terminal pins that match the terminal jacks.

[0012] As a preferred solution of the present invention, a crown spring that matches the terminal pin is provided in the terminal jack.

[0013] As a preferred solution of the present invention, a plastic cap is provided on the head of the terminal pin.

[0014] As a preferred solution of the present invention, first clamping parts are provided at both ends of the plugging surface of the first plugging part, and second clamping parts that are engaged with the first clamping parts are provided at both ends of the plugging surface of the second plugging part.

[0015] As a preferred solution of the present invention, the first clamping portion is provided with two symmetrical and connected clamping cavities, and the second clamping portion is provided with two symmetrical buckles, and the two buckles are used to clamp with the two clamping cavities.

[0016] As a preferred solution of the present invention, a snap-in position for snapping with the two snaps is formed between the two snap-in cavities.

[0017] As a preferred solution of the present invention, an unlocking hole is provided on the first clamping portion, and the unlocking holes are respectively connected to the two clamping cavities and are arranged opposite to the buckle position.

[0018] As a preferred solution of the present invention, a sealing ring is provided on the outer wall of the terminal insertion hole.

[0019] As a preferred solution of the present invention, a mounting hole is provided on the raised portion.

[0020] As a preferred solution of the present invention, the male junction box further includes:

[0021] A cable, one end of which extends into the interior of the housing and is electrically connected to the plurality of terminal jacks, and the other end of the cable is provided with a connector.

[0022] Compared with the prior art, the beneficial effects of the present invention are:

[0023] 1. By providing an elevated portion on the mounting base of the mother junction box and opening ventilation and heat dissipation vents around the elevated portion, the air circulation path and area are increased, allowing the heat inside the junction box to dissipate more quickly, effectively lowering the operating temperature of the junction box, reducing the risk of performance degradation or failure due to overheating, improving the stability and reliability of power transmission, and extending the overall service life of the junction box;

[0024] 2. By installing a crown spring in the terminal jack, the contact area between the terminal jack and the terminal pin is increased, which helps reduce contact resistance and improve power transmission efficiency. The crown spring has good elasticity, which can ensure that during the plugging and unplugging process, regardless of the slight deviation in the size or position of the pin, it can maintain stable contact force, thereby improving connection reliability. Due to the elastic effect of the crown spring, the plugging and unplugging feel is soft, reducing mechanical impact on the terminal box and pins, and extending service life.

[0025] 3. A plastic cap is provided on the head of the terminal pin to prevent finger contact;

[0026] 4. The female junction box and the male junction box can be quickly connected and disconnected through the first clamping part and the second clamping part. The design simplifies the installation steps, reduces the installation time and improves work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0028] Figure 1 This is a structural diagram of a solar junction box with optimized ventilation structure in one embodiment of the present invention;

[0029] Figure 2 This is a structural diagram of a female junction box in one embodiment of the present utility model;

[0030] Figure 3 This is a cross-sectional view of a female junction box in one embodiment of the present utility model;

[0031] Figure 4 This is a structural diagram of a male junction box in one embodiment of the present invention.

[0032] In the figure,

[0033] 1. Female junction box; 11. Mounting base; 12. First plug-in portion; 13. Elevation portion; 14. Ventilation and heat dissipation vent; 15. Terminal jack; 151. Crown spring; 16. First clamping portion; 161. Clamping cavity; 162. Buckle position; 163. Unlocking hole; 17. Sealing ring; 18. Mounting hole; 2. Male junction box; 21. Housing; 22. Second plug-in portion; 23. Terminal pin; 231. Plastic cap; 24. Second clamping portion; 241. Buckle; 25. Cable; 26. Connector. DETAILED DESCRIPTION

[0034] To make the technical problems, technical solutions, and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be noted that similar reference numerals and letters represent similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings. It should also be noted that the embodiments described below are intended only to illustrate the present invention and are not intended to limit the present invention.

[0035] It should be noted that the terms "installed," "set," "connected," "fixed," etc. should be understood in a broad sense. For example, they can mean fixed connection, detachable connection, or integration; they can mean mechanical connection or electrical connection; they can mean direct connection or indirect connection through an intermediate medium; they can mean internal communication between two elements or interaction between two elements, unless otherwise clearly defined. The orientation or position relationship indicated is based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the product of the application is usually placed when in use, or the orientation or position relationship commonly understood by those skilled in the art, or the orientation or position relationship in which the product of the application is usually placed when in use. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, they should not be understood as limiting this application. The terms "first" and "second" are only used for the convenience of description and should not be understood to indicate or imply relative importance or implicitly indicate the number of technical features. "Several" means one or more, unless otherwise clearly defined.

[0036] See also Figures 1 to 4 ,This embodiment provides a solar junction box with an optimized ventilation structure, which is installed on a solar photovoltaic panel to play a role in power transmission.

[0037] The solar junction box includes a female junction box 1 and a male junction box 2 for mating with the female junction box 1. The female junction box 1 includes a mounting base 11 and a first plug-in portion 12. The upper surface of the mounting base 11 protrudes upward to form a raised portion 13, which is circumferentially provided with a plurality of ventilation and heat dissipation vents 14. The first plug-in portion 12 is mounted on the raised portion 13, and the plug-in surface of the first plug-in portion 12 is provided with a row of terminal jacks 15 parallel to the raised portion 13. The male junction box 2 includes a housing 21 and a second plug-in portion 22. The second plug-in portion 22 is mounted on the housing 21, and the plug-in surface of the second plug-in portion 22 is provided with a row of terminal pins 23 that mate with the terminal jacks 15. By providing the raised portion 13 on the mounting base 11 of the female junction box 1 and providing the ventilation and heat dissipation vents 14 around the raised portion 13, the path and area for air circulation are increased, allowing heat inside the junction box to be dissipated more quickly, effectively reducing the operating temperature of the junction box. Good heat dissipation helps maintain the operating temperature of the junction box's internal electronic components within a reasonable range, reducing the risk of performance degradation or failure due to overheating, thereby improving the stability and reliability of power transmission. By optimizing the ventilation structure, the junction box's heat dissipation capacity is enhanced, helping to reduce the accelerated aging of internal components due to long-term high temperatures, thereby extending the overall service life of the junction box.

[0038] See also Figure 3 In one embodiment, a crown spring 151 is disposed within the terminal jack 15 to engage the terminal pin 23. The provision of the crown spring 151 increases the contact area between the terminal jack 15 and the terminal pin 23, helping to reduce contact resistance and improve power transmission efficiency. The crown spring 151 exhibits excellent elasticity, ensuring stable contact force during insertion and removal, regardless of slight deviations in the size or position of the terminal pin 23, thereby improving connection reliability. The elasticity of the crown spring 151 provides a smooth feel during insertion and removal, reducing mechanical impact on the terminal box and pins and extending their service life.

[0039] See also Figure 4 In one embodiment, the head of the terminal pin 23 is provided with a plastic cap 231. This cap 231 acts as a non-conductive barrier, protecting against finger contact. When a finger reaches into the terminal pin 23 in the male junction box 2, the first contact is the plastic cap 231, not the live terminal pin 23. This effectively prevents direct electric shock and significantly reduces the risk. For ordinary users or maintenance personnel, this design provides an additional safety measure, reducing the risk of electric shock caused by misoperation or negligence, making the junction box safer and more reliable to use.

[0040] See also Figures 1 to 4In one embodiment, first connector 12 is provided with first snap-fitting portions 16 at both ends of its plugging surface, and second connector 22 is provided with second snap-fitting portions 24 at both ends of its plugging surface that engage with first snap-fitting portions 16. The first snap-fitting portions 16 and second snap-fitting portions 24 enable quick connection and disconnection between the female and male junction boxes 1 and 2. This design simplifies installation, reduces installation time, and improves work efficiency. This quick connection mechanism is particularly important for solar systems that require frequent replacement or maintenance, allowing on-site installers to easily replace or repair junction boxes.

[0041] See also Figures 2 to 4 In one embodiment, the first engaging portion 16 is provided with two symmetrical and interconnected engaging cavities 161, and the second engaging portion 24 is provided with two symmetrical snaps 241, which are configured to engage with the two engaging cavities 161. The two symmetrical and interconnected engaging cavities 161 on the first engaging portion 16 cooperate with the two symmetrical snaps 241 on the second engaging portion 24 to form a stable connection structure, ensuring that the junction box maintains a stable connection even in harsh environments (such as strong winds and vibrations), and preventing power transmission problems caused by poor contact.

[0042] See also Figure 2 、 Figure 3 In one embodiment, a snap-in position 162 for engaging with the two snaps 241 is formed between the two snap-in cavities 161. The first snap-in portion 16 is provided with an unlocking hole 163, which is in communication with the two snap-in cavities 161 and is disposed opposite the snap-in position 162. When the two snaps 241 are fully inserted into the two snap-in cavities 161, they snap into the snap-in position 162, thereby firmly locking the female junction box 1 and the male junction box 2 together. The provision of the unlocking hole 163 allows the snaps 241 to be easily disengaged from the snap-in position 162 when it is necessary to disconnect the female junction box 1 and the male junction box 2, simply by inserting an unlocking tool into the unlocking hole 163, thereby achieving a quick disconnection.

[0043] See also Figure 2 、 Figure 3 In one embodiment, a sealing ring 17 is provided on the outer wall of the terminal jack 15. The provision of the sealing ring 17 enhances the sealing effect between the female junction box 1 and the male junction box 2, preventing external contaminants such as moisture and dust from entering the female junction box 1 or the male junction box 2. This enables the solar junction box to better adapt to various complex environmental conditions and maintain stable electrical performance and reliable connection status in dry, humid, and dusty environments.

[0044] See also Figure 2In one embodiment, a mounting hole 18 is provided on the raised portion 13. Through the mounting hole 18, the female junction box 1 can be conveniently mounted on the solar photovoltaic panel using fasteners such as screws and nuts.

[0045] See also Figure 1 、 Figure 4 In one embodiment, the male junction box 2 further includes a cable 25. One end of the cable 25 extends into the interior of the housing 21 and is electrically connected to the terminal jacks 15. The other end of the cable 25 is provided with a connector 26. The provision of the cable 25 enables the male junction box 2 to be directly connected to other electrical devices or systems via the cable 25 without the need for additional terminal blocks or adapters, thereby simplifying the electrical connection process and reducing connection complexity and cost.

[0046] It should be understood that those skilled in the art can make improvements or changes based on the above description, and all such improvements and changes should fall within the scope of protection of the claims attached to this utility model.

[0047] The above is an exemplary description of the present utility model patent in conjunction with the accompanying drawings. It is obvious that the implementation of the present utility model patent is not limited to the above-mentioned method. As long as various improvements are made using the method concept and technical solution of the present utility model patent, or the concept and technical solution of the present utility model patent are directly applied to other occasions without improvement, they are all within the scope of protection of the present utility model.

Claims

1. A solar junction box with optimized ventilation structure, characterized in that: It includes a female junction box and a male junction box for matching and connecting with the female junction box, and the female junction box includes: The mounting base has an upper surface that protrudes upward to form a raised portion, and the raised portion is provided with a plurality of ventilation and heat dissipation openings around the portion: A first plug-in portion is provided on the raised portion, wherein a plug-in surface of the first plug-in portion is provided with a row of terminal jacks parallel to the raised portion; The male junction box includes: case; The second plug-in portion is arranged on the housing, and a plug-in surface of the second plug-in portion is provided with a row of terminal pins that match the terminal jacks.

2. The solar junction box with optimized ventilation structure according to claim 1, characterized in that: A crown spring matched with the terminal pin is arranged in the terminal insertion hole.

3. The solar junction box with optimized ventilation structure according to claim 1, characterized in that: The head of the terminal pin is provided with a plastic cap.

4. The solar junction box with optimized ventilation structure according to claim 1, characterized in that: Two ends of the plugging surface of the first plugging part are provided with first clamping parts, and two ends of the plugging surface of the second plugging part are provided with second clamping parts that are buckled with the first clamping parts.

5. The solar junction box with optimized ventilation structure according to claim 4, characterized in that: The first clamping portion is provided with two symmetrical and connected clamping cavities, and the second clamping portion is provided with two symmetrical buckles, and the two buckles are used to be clamped with the two clamping cavities.

6. The solar junction box with optimized ventilation structure according to claim 5, characterized in that: A buckle position for buckling with the two buckles is formed between the two buckle cavities.

7. The solar junction box with optimized ventilation structure according to claim 6, characterized in that: The first clamping portion is provided with an unlocking hole, which is communicated with the two clamping cavities respectively and is arranged opposite to the buckle position.

8. The solar junction box with optimized ventilation structure according to claim 1, characterized in that: The outer wall of the terminal insertion hole is provided with a sealing ring.

9. The solar junction box with optimized ventilation structure according to claim 1, characterized in that: The raised portion is provided with a mounting hole.

10. The solar junction box with optimized ventilation structure according to claim 1, characterized in that: The male junction box also includes: A cable, one end of which extends into the interior of the housing and is electrically connected to the plurality of terminal jacks, and the other end of the cable is provided with a connector.

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